Note 288 — Chapter II · CONSTITUENTS OF THE LICHEN THALLUS
Reading edition
In a comparative study of leaf algae from Ceylon and Barbadoes, N. Thomas (1913) came to the conclusion that Marshall Ward’s alga in its early stages is the same as Phyllactidium tropicum Moebius; and that the Barbadoes alga with which she was working represented the older stages, it being then subcuticular in habit, forming rhizoids, barren and sterile aerial hairs and subcuticular zoosporangia.